//begin preload images
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/lp/home-over.jpg");
		learn_over = newImage("images/lp/learn-over.jpg");
		signup_over = newImage("images/lp/signup-over.jpg");
		contact_over = newImage("images/lp/contact-over.jpg");
		preloadFlag = true;
	}
}
//end preload images

//begin current year
var time=new Date();
year=time.getYear();
if ( year < 2000 ) { year = year + 1900; }
var current_year = year;
//end current year